Various software programs developed entirely, or in part by, the author to address crime analysis issues.

Near Repeat Calculator

The near-repeat phenomenon states that if a location is the target of a crime (such as burglary), then locations within a relatively short distance have an increased chance of being burgled for a limited period of time. The Near Repeat Calculator will estimate the near repeat processes of crime data using simple inputs of date, and coordinates. The program is housed on the website of Temple University’s Department of Criminal Justice.

Weighted Displacement Quotient calculator

Enter details of a target, buffer and control area, and the spreadsheet calculates the weighted displacement quotient as well as some other useful statistics. Designed to evaluate the success of spatially constrained (hotspot) police operations. The SEPTIC (yes, that is it’s name) spreadsheet can be downloaded here.

Dispersion calculator

This program will calculate an Offense Dispersion Index and associated values for specific crime data in a fixed format. The dispersion calculator is useful for calculating the distribution of any crime increase across a number of are sub-units, such as police districts or beats.

Buffer Intensity Calculator

This is a freeware tool that calculates an inverse distance weighted buffer value for crime events around locations. It only requires x,y coordinate inputs from a list of locations and from crime events around those locations. The inverse distance weighting comes in a range of linear and non-linear algorithms. More specifics and download details.

HotSpot Detective

The once best-selling MapInfo toolbar for crime analysis, is now no longer supported. I doubt it, but you might like to know why.